Valve closure system
AssigneeRose Controls Corp.
InventorLouis D. Bruno
Life of this patent
Estimating the term…
Abstract
A valve assembly includes a valve closing device that is located within the flow passageway closed by the valve. The valve closure device includes a force member for imparting a closing force on a valve disk adjacent to the portion of the disk that contacts a valve seat. The force member is preferably a lever or fulcrum arm having an abutment extension at one end for directly contacting an edge of the valve disk. The opposite end of the lever preferably includes a weight for urging the disk into a closed position and for imparting a closing force upon the disk. The force member is mounted for movement relative to the valve disk and for movement with the valve disk as the valve disk rotates between an open and closed position.
Claims21
A valve assembly for closing a passageway, comprising:
- a valve seat extending about an inner periphery of the passageway;
- a valve disk rotatably mounted within the passageway for rotating about a first axis between a closed position wherein said disk contacts said valve seat to close said passageway and an open position;
- and
- a closing device coupled to said disk within said passageway including a force member that pivots about a second axis to urge said disk into said closed position and to impart a sealing force adjacent an edge of said disk to maintain said disk in contact with said seat.
A valve assembly, comprising:
- a valve body having a valve seat;
- a valve disk rotatably supported for rotation about a first axis and having edges that move into or out of closing engagement with said valve seat upon rotation of said disk;
- means for rotating said disk out of engagement with said seat;
- and
- a valve closing device supported for rotational movement with said disk and including a force member that pivots about a second axis and has a first end that engages one of said disk edges when said force member pivots about said second axis in a closing direction, said force member first end urging said one of said disk edges into sealing engagement with said valve seat.
A valve closing device for use in a valve assembly having a pivoting valve disk that pivots within a passageway between a closed position and an open position, comprising:
- a mounting bracket adapted to be coupled to the valve disk;
- a lever member pivotally supported by said mounting bracket within the passageway for pivoting about a lever axis;
- a weight supported on said lever member within the passageway for urging the valve disk into the closed position;
- and
- an abutment extension extending from said lever member to abut one edge of the valve disk to thereby impart a closing force adjacent said disk edge for maintaining the disk in the closed position.
A regenerative thermal oxidizer, comprising:
- a combustion chamber;
- a plurality of heat exchangers each communicating with said combustion chamber at one end;
- a plurality of passageways communicating with a second end of each said heat exchanger;
- a rotary valve associated with each said passageway;
- and
- a valve closing assembly associated with each said valve and including a force member pivotally supported within said passageway for rotation with said valve to urge said valve into a closed position such that said passageway is closed, each force member imparting a closing force directly onto an edge of each said valve within each said passageway.
Dependencies are inferred from the claim text.